Improvement in spark-arresters



w. F.v G nAssLEa. Spark-Arresters.

Patented Apr'il l, 1873.

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` WILLIAM F. GRASSLER, OF MUNGY, PENNSYLVANIA.

IMPROVEMENT IN SPARK-ARRESTERS.

Specication forming part of Letters Patent No. 137,435, dated April l,1373 application tiled January 2, 1873.

proved arrester and of a portion of the smokebox of a locomotivesteam-generator. Fig. 2 is a plan view ofY a portion of the conicalspark-disintegrator, showing the construction thereof. Fig. 3 is asectional elevation of parts of two of the bars of whichthedisintegrator is composed. Fig. 4 is an elevation of a portion of theinverted truncated cone or bowl, against which the sparks strike in as;

cending the pipe. Fig. 5 is a plan viewyofthve inverted portion of thedisintegrator, and Fig. 6 is an elevation of a portion of two of thebars of which it is composed, showing the seri-ations upon the lowersurface thereof, and their position with reference to cach other.

Uorrespondin g letters refer to similar parts in the several figures.

rIhis invention relates to that class of devices which are to be placedupon locomotiveengines, or upon the pipes or flues of stationary enginesand other furnaces where fuel is burned; and it consists in providingsuch pipes with a spark-disintegrator of peculiar construction, and inthe construction, combination, and arrangement of certain of its parts,as will be more fully explained hereinafter.

In constructing devices of this character I use a base, A, of such aform upon its under surface as to adapt it to rest upon the smokebox ofa locomotiveengine, or upon any furnace or flue to which it is to beapplied. Upon the interior of this base there are formed lugs A', towhich to fasten an interior pipe, soon to be described. This base may beof cast or wrought metal, its upper end being adapted to the receptionof the outer cylindrical pipe B, which is bolted or riveted thereto, andwhich extends upward for any required distance, according to the kind ofgenerator or iiue to which it 1s applied. Upon the top of thiscylindrical portion there is secured an inverted frustum of a cone, B1,which is made of sheet metal, and extends upward from the point where itjoins the cylindrical portion B, at such an angle as will cause it to beof such diameter at its upper end as to receive thesparlr-disintegrato1, at which point it is provided with a flange forattaching thereto said disintegrator, and a frustum of a cone, B2,

open at its upper end, said opening being of sufficient diameter toallow the gases from the burning fuel and the exhaust steam from theengine to pass out through it. Upon the top of the frustum B2 there isplaced a ring of metal, which serves to support the same, and also toforma short cylindrical portion of the arrester for giving an upwarddirection to the steam a/nd gases. To the lugs A A', upon the base'A,there is bolted or otherwise secured an interior pipe, (I, it being heldin its proper by the exhaust steam and disintegrated in the upperportion of the arrester, to fall down through and be brought in contactwith the iiame which may pass through the fines of the generator. Thispipe O extends down into the smokebox for a short distance, and isprovided with a funnel-shaped termination, as shown in Fig. 1, itsoffice being to form an increased area of opening for the steam andgases to enter it, and also to deflect the sparks which fall upon itsouter surface. The upper termination of this pipe is within the invertedfrustum B1, and at some distance aboveJ the outer cylindrical portion B,to which end there are bolted three or more supports, D D, the lowerends of which are secured to said pipe,- their upper ends being providedwith nuts for the'purpose of holding and rendering adjustable verticallyan inverted bowl, E, which is to be made of cast metal, or of anysuitable material which will `admit of havin g formed upon its outersurface suitable projections, as shown, for the purpose of, to someextent, arresting the momentum of the sparks and cinders while they arebeing deflected toward the disintegrator, and also for the purpose of,to some extent, breaking up such inaterial. Near the lower end of thisbowl there is placed a cross-bar for the purpose of holding the stem ofan inverted deflector, F, which ismade adjustable vertically by means ofnuts upon its stem, which are placed upon either side of the cross-barof the bowl. As this deiiector is located centrally in the pipe C,through which the steam and gases, as well as the sparks and cinders,pass, it will serve to distribute the same evenly to all parts of thedisintegrator, which is located above it, and which is formed of two ormore sections, G and G', the outer one being divided into quartersections transversely, as shown in Fig. 2, and composed of a series ofmetallic rin gs and bars, the rings having upon their lower edge aseries of projections, as shown in Fig. 3, those on each alternate ringbeing opposite the spaces in the intervening ones, in order that thesparks and cinders, in passing through the -spaces left between saidrings, may be broken and pulverized as finely as possible, and `thelargest portion of them be prevented from escaping into the atmosphereby being compelled to fall down through the spark and dust chamber Hinto the annular space between the pipes B and G, the chamber H herealluded to being formed by the inverted conical frustum B1, the frustumB2, disintegrator G G', and interior pipe C. The portion G of thedisintegrator is located centrally in the portion G, it being inverted,and having its lower portion of less diameter than that of the upper`end of the bowl E. This section is composed of a series of rings andbars, as shown in Figs. 5 and 6, spaces being left between such bars forthe escape of gases, it being held in position by means of bolts passingthrough a ila-nge upon its upper 'surface and through a similar flangeupon the portion G. The lower surfaces of the rings of thiscentrally-located portion are provided with projections similar to thoseupon the bars of thel outer portion, said projections being arrangedopposite the spaces in the next ring, thus compelling the sparks andgases to travel in a zigzag course in passing out of the arrester,which, as they are driven against such projections on both sections ofthe disintegrator, has the effect to arrest the sparks and cinders andallow their own gravity to carry them downward, as above described, theybeing removed from the inuen ce of the ascending currents by thedirection given them by the deflector F and the bowl E.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. The disintegrator G G', when constructed and 'arranged to operatesubstantially as and for the purpose specified.

2. The combination ofthe disintegrator, inverted bowl, and deector withthe enlarged portion of a spark-arrester, substantially as shown, andfor the purpose speciiied.

3. The combination of the adjustable deflector F and the inverted bowl E'with the interior pipe of a spark-arrester, substantially as and forthe purpose set forth.

4. The combination of the inverted bowl E and the disintegrator G G',substantially as set forth.

5. The combination, in a spark-arrester, of an outer pipe, B B1 B2, aninterior pipe, O, an inverted bowl, E, ldeilector F, and a disintegratorG G', the parts being arranged to operate substantially as and for thepurpose set forth.

In testimony whereof I have signed my name to this specification inpresenceof two subscribing witnesses.

WM. F. GRASSLER.

Witnesses:

WM. BRINDLE, J oHN SHOEMAKER.

